<?php
/**
 * This file is part of webman.
 *
 * Licensed under The MIT License
 * For full copyright and license information, please see the MIT-LICENSE.txt
 * Redistributions of files must retain the above copyright notice.
 *
 * @author    walkor<walkor@workerman.net>
 * @copyright walkor<walkor@workerman.net>
 * @link      http://www.workerman.net/
 * @license   http://www.opensource.org/licenses/mit-license.php MIT License
 */
namespace support\bootstrap\db;

use Webman\Bootstrap;
use support\Db;
use Workerman\Timer;

/**
 * @package support\bootstrap\db
 */
class Heartbeat implements Bootstrap
{
    /**
     * @param \Workerman\Worker $worker
     * @return void
     */
    public static function start($worker)
    {
        Timer::add(50, function (){
            Db::query('select 1 limit 1');
        });
    }
}
